> ## Documentation Index
> Fetch the complete documentation index at: https://docs.laozhang.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# 2025 Announcement Archive

> Index of LaoZhang API model launches, pricing changes, and service updates from 2025.

## Archive sections

* [September–December 2025 announcements](/en/announcements/changelog-archive-2025-09-12) — GPT-5.2, Claude Opus 4.5, Gemini 3, GPT-5.1, Claude Haiku 4.5, and Sonnet 4.5
* [June–August 2025 announcements](/en/announcements/changelog-archive-2025-06-08) — DeepSeek V3.1, Kimi K2, GPT-5, OpenAI open models, Gemini 2.5, and pricing updates

[Back to announcements](/en/changelog)